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<FONT color="green">001</FONT>    package org.hackystat.sensorbase.db;<a name="line.1"></a>
<FONT color="green">002</FONT>    <a name="line.2"></a>
<FONT color="green">003</FONT>    import java.util.Map;<a name="line.3"></a>
<FONT color="green">004</FONT>    import java.util.TreeMap;<a name="line.4"></a>
<FONT color="green">005</FONT>    import java.util.logging.Logger;<a name="line.5"></a>
<FONT color="green">006</FONT>    <a name="line.6"></a>
<FONT color="green">007</FONT>    import org.hackystat.utilities.logger.HackystatLogger;<a name="line.7"></a>
<FONT color="green">008</FONT>    <a name="line.8"></a>
<FONT color="green">009</FONT>    /**<a name="line.9"></a>
<FONT color="green">010</FONT>     * Supports profiling by keeping track of how many times a particular SQL statement <a name="line.10"></a>
<FONT color="green">011</FONT>     * was invoked.  Implemented as a singleton so we can get at this thing from the <a name="line.11"></a>
<FONT color="green">012</FONT>     * shutdown hook.<a name="line.12"></a>
<FONT color="green">013</FONT>     * @author Philip Johnson<a name="line.13"></a>
<FONT color="green">014</FONT>     */<a name="line.14"></a>
<FONT color="green">015</FONT>    public class SqlProfiler {<a name="line.15"></a>
<FONT color="green">016</FONT>      <a name="line.16"></a>
<FONT color="green">017</FONT>      /** The table of sql statements and their frequencies. */<a name="line.17"></a>
<FONT color="green">018</FONT>      private Map&lt;String, Integer&gt; sqlInvocations = new TreeMap&lt;String, Integer&gt;();<a name="line.18"></a>
<FONT color="green">019</FONT>      <a name="line.19"></a>
<FONT color="green">020</FONT>      /** The singleton instance. */<a name="line.20"></a>
<FONT color="green">021</FONT>      private static SqlProfiler theInstance = new SqlProfiler();<a name="line.21"></a>
<FONT color="green">022</FONT>      <a name="line.22"></a>
<FONT color="green">023</FONT>      /**<a name="line.23"></a>
<FONT color="green">024</FONT>       * Create a new SQLProfiler ADT.<a name="line.24"></a>
<FONT color="green">025</FONT>       */<a name="line.25"></a>
<FONT color="green">026</FONT>      private SqlProfiler() {<a name="line.26"></a>
<FONT color="green">027</FONT>        //do nothing.<a name="line.27"></a>
<FONT color="green">028</FONT>      }<a name="line.28"></a>
<FONT color="green">029</FONT>      <a name="line.29"></a>
<FONT color="green">030</FONT>      /**<a name="line.30"></a>
<FONT color="green">031</FONT>       * Returns the singleton instance of the profiler.<a name="line.31"></a>
<FONT color="green">032</FONT>       * @return The profiler.<a name="line.32"></a>
<FONT color="green">033</FONT>       */<a name="line.33"></a>
<FONT color="green">034</FONT>      public static SqlProfiler getInstance() {<a name="line.34"></a>
<FONT color="green">035</FONT>        return theInstance;<a name="line.35"></a>
<FONT color="green">036</FONT>      }<a name="line.36"></a>
<FONT color="green">037</FONT>      <a name="line.37"></a>
<FONT color="green">038</FONT>      /**<a name="line.38"></a>
<FONT color="green">039</FONT>       * Add the passed SQL statement to the table. <a name="line.39"></a>
<FONT color="green">040</FONT>       * @param statement The statement.<a name="line.40"></a>
<FONT color="green">041</FONT>       */<a name="line.41"></a>
<FONT color="green">042</FONT>      public void add(String statement) {<a name="line.42"></a>
<FONT color="green">043</FONT>        if (!sqlInvocations.containsKey(statement)) {<a name="line.43"></a>
<FONT color="green">044</FONT>          sqlInvocations.put(statement, 0);<a name="line.44"></a>
<FONT color="green">045</FONT>        }<a name="line.45"></a>
<FONT color="green">046</FONT>        sqlInvocations.put(statement, sqlInvocations.get(statement) + 1);<a name="line.46"></a>
<FONT color="green">047</FONT>      }<a name="line.47"></a>
<FONT color="green">048</FONT>      <a name="line.48"></a>
<FONT color="green">049</FONT>      /**<a name="line.49"></a>
<FONT color="green">050</FONT>       * Returns the table of SQL strings and their frequency of invocations. <a name="line.50"></a>
<FONT color="green">051</FONT>       * @return A string containing the listing of SQL strings.  <a name="line.51"></a>
<FONT color="green">052</FONT>       */<a name="line.52"></a>
<FONT color="green">053</FONT>      @SuppressWarnings("unchecked")<a name="line.53"></a>
<FONT color="green">054</FONT>      @Override<a name="line.54"></a>
<FONT color="green">055</FONT>      public String toString() {<a name="line.55"></a>
<FONT color="green">056</FONT>        StringBuffer buff = new StringBuffer();<a name="line.56"></a>
<FONT color="green">057</FONT>        buff.append("Results of SQL statement profiling\n");<a name="line.57"></a>
<FONT color="green">058</FONT>        for (Map.Entry entry : sqlInvocations.entrySet()) {<a name="line.58"></a>
<FONT color="green">059</FONT>          buff.append(entry.getValue()).append(' ').append(entry.getKey()).append("\n");<a name="line.59"></a>
<FONT color="green">060</FONT>        }<a name="line.60"></a>
<FONT color="green">061</FONT>        return buff.toString();<a name="line.61"></a>
<FONT color="green">062</FONT>      }<a name="line.62"></a>
<FONT color="green">063</FONT>      <a name="line.63"></a>
<FONT color="green">064</FONT>      /**<a name="line.64"></a>
<FONT color="green">065</FONT>       * Sends the profiling information to a logger in the ~/.hackystat/sensorbase/logs directory.<a name="line.65"></a>
<FONT color="green">066</FONT>       */<a name="line.66"></a>
<FONT color="green">067</FONT>      public void dump() {<a name="line.67"></a>
<FONT color="green">068</FONT>        Logger logger = <a name="line.68"></a>
<FONT color="green">069</FONT>          HackystatLogger.getLogger("org.hackystat.sensorbase.db.SqlProfiler", "sensorbase");<a name="line.69"></a>
<FONT color="green">070</FONT>        logger.info(this.toString());<a name="line.70"></a>
<FONT color="green">071</FONT>      }<a name="line.71"></a>
<FONT color="green">072</FONT>      <a name="line.72"></a>
<FONT color="green">073</FONT>    <a name="line.73"></a>
<FONT color="green">074</FONT>    }<a name="line.74"></a>




























































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